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GRM188R71E103KA01J Datasheet(PDF) 8 Page - International Rectifier |
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GRM188R71E103KA01J Datasheet(HTML) 8 Page - International Rectifier |
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8 / 43 page  - 8 - August 08, 2012 |DATA SHEET | 3.4 8 IR3899 9A Highly Integrated SupIRBuck TM Single‐Input Voltage, Synchronous Buck Regulator PD‐97661 PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Vref Margining Voltage Vref_marg 0.4 1.2 V Sink Current Isink_Vref Vref = 0.6V 12.7 16.0 19.3 µA Source Current Isrc_Vref Vref = 0.4V 12.7 16.0 19.3 Vref Comparator Threshold Vref_disable Vref pin connected externally 0.15 V Vref_enable 0.4 Soft Start/Stop Soft Start Ramp Rate Ramp(SS_start) 0.16 0.2 0.24 mV/µs Soft Stop Ramp Rate Ramp(SS_stop) ‐0.24 ‐0.2 ‐0.16 S_Ctrl Threshold High 2.4 V Low 0.6 Power Good PGood Turn on Threshold VPG(on) Vsns Rising, 0.4V < Vref < 1.2V 85 90 95 % Vref Vsns Rising, Vref < 0.1V 85 90 95 % Vp PGood Lower Turn off Threshold VPG(lower) Vsns Falling, 0.4V < Vref < 1.2V 80 85 90 % Vref Vsns Falling, Vref < 0.1V 80 85 90 % Vp PGood Turn on Delay VPG(on)_Dly Vsns Rising,see VPG(on) 1.28 ms PGood Upper Turn off Threshold VPG(upper) Vsns Rising, 0.4V < Vref < 1.2V 115 120 125 % Vref Vsns Rising, Vref < 0.1V 115 120 125 % Vp PGood Comparator Delay VPG(comp)_ Dly Vsns < VPG(lower) or Vsns >VPG(upper) 1 2 3.5 µs PGood Voltage Low PG(voltage) IPgood = ‐5mA 0.5 V Tracker Comparator Upper Threshold VPG(tracker_ upper) Vp Rising, Vref < 0.1V 0.4 V Tracker Comparator Lower Threshold VPG(tracker_ lower) Vp Falling, Vref < 0.1V 0.3 Tracker Comparator Delay Tdelay(tracker) Vp Rising, Vref < 0.1V,see VPG(tracker_upper) 1.28 ms Under‐Voltage Lockout Vcc‐Start Threshold VCC_UVLO_Start Vcc Rising Trip Level 4.0 4.2 4.4 V Vcc‐Stop Threshold VCC_UVLO_Stop Vcc Falling Trip Level 3.7 3.9 4.1 Enable‐Start‐Threshold Enable_UVLO_Start Supply ramping up 1.14 1.2 1.26 V Enable‐Stop‐Threshold Enable_UVLO_Stop Supply ramping down 0.95 1 1.05 Enable Leakage Current Ien Enable = 3.3V 1 µA Over‐Voltage Protection OVP Trip Threshold OVP_Vth Vsns Rising, 0.45V < Vref < 1.2V 115 120 125 % Vref Vsns Rising, Vref < 0.1V 115 120 125 % Vp OVP Comparator Delay OVP_Tdly 1 2 3.5 µs |
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